.login-form {
  width: 350px;
  height: 280px;
  position: relative;
  left: 64%;
  transform: translate3d(-50%, 10%, 0);
}
.footer {
  text-align: "center";
  bottom: 0;
  width: 100%;
  position: absolute;
  text-align: center;
}
.back {
  height: 570px;
  background-image: url(../../graghs/back.jpg);
  background-repeat: no-repeat;
  background-size: 100%;
}
.image {
  width: 350px;
  height: 280px;
  background-image: url(../../graghs/left.png);
  background-repeat: no-repeat;
  position: relative;
  margin-left: 295px;
  margin-top: -252px;
  border-radius: 25px 0 0 25px;
}
#btn {
  transform: translate3d(-10%, -50%, 0);
}
.head {
  text-align: center;
  padding-top: 80px;
  color: midnightblue;
  font-family: "幼圆";
  font-weight: bold;
  font-size: 30px;
}
